Operating system knowledge summary
Operating system (1) Operating system quote
Operating system (two) processor management
Operating system (three) memory management
Operating system (four) equipment management
Operating System (5) File Management
Operating System (6) User Interface
Operating system (operation system, OS for short) is a computer program that manages computer hardware and software resources. The operating system needs to deal with basic tasks such as managing and configuring memory, determining the priority of system resource supply and demand, controlling input devices and output devices, operating the network, and managing the file system. The operating system also provides an operation interface for users to interact with the system.
- The operating system mainly includes the following functions:
① Process management, its work is mainly process scheduling. In the case of single user single task, the processor is exclusively occupied by one task of one user, and the work of process management is very simple. However, in the case of multiple programs or multiple users, when multiple jobs or tasks are organized, problems such as processor scheduling, allocation, and recycling must be solved.
②Storage management is divided into several functions: storage allocation, storage sharing, storage protection, and storage expansion.
③The equipment management is divided into the following functions: equipment allocation, equipment transmission control, and equipment independence.
④File management: file storage space management, directory management, file operation management, file protection.
⑤ Job management is responsible for handling any requests submitted by users.